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What is the approximate ratio of neutrons to protons in a nucleus of radon -222
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Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
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What is the approximate ratio of neutrons to protons in a nucleus of radon -222...
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